Plz Help! The pipeline and the elements

[Gao-dw]

Hi, Everyone

 

I have met such a situation. I have to manage a pipeline manually to playback OGG files.

As you know, an ogg file may be either pure audio or mixed with audio and video.

If I put all possible elements (the filesrc, demuxer, audioqueue, videoqueue, decoder ... etc.) into the pipeline, the pipeline seems not to work when the file contains audio only, and it works if the file contains both audio and video.

 

So what may the problem be?

 

Can anyone explain what may happen if the pipeline contains elements that are not needed.

 

filesrc --> demuxer --> audioqueue --> ... --> audiosink

 

                                videoquque --> ... --> videosink (here, the videoqueue and the related elements are not used)

 

I wish I have described the problem clearly.

 

Best regards.

 

2008-12-18

---

Gao-dw

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[Thiago Sousa Santos-2]

On Thu, Dec 18, 2008 at 1:24 PM, Gao-dw <[hidden email]> wrote:

Hi, Everyone

 

I have met such a situation. I have to manage a pipeline manually to playback OGG files.

As you know, an ogg file may be either pure audio or mixed with audio and video.

If I put all possible elements (the filesrc, demuxer, audioqueue, videoqueue, decoder ... etc.) into the pipeline, the pipeline seems not to work when the file contains audio only, and it works if the file contains both audio and video.

 

So what may the problem be?

 

Can anyone explain what may happen if the pipeline contains elements that are not needed.

 

filesrc --> demuxer --> audioqueue --> ... --> audiosink

 

                                videoquque --> ... --> videosink (here, the videoqueue and the related elements are not used)

 

I wish I have described the problem clearly.

Read: http://gstreamer.freedesktop.org/data/doc/gstreamer/head/manual/html/chapter-pads.html 

 

Best regards.

 

2008-12-18

---

Gao-dw

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is intended only for the use of the intended recipient and may be confidential and/or privileged of 
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not the intended recipient, unauthorized use, forwarding, printing,  storing, disclosure or copying 
is strictly prohibited, and may be unlawful.If you have received this communication in error,please 
immediately notify the sender by return e-mail, and delete the original message and all copies from 
your system. Thank you. 
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--
Thiago Sousa Santos

Embedded Systems and Pervasive Computing Lab (Embedded)
Center of Electrical Engineering and Informatics (CEEI)
Federal University of Campina Grande (UFCG)

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